220 BRITISH ENTO.MOSTRACA. 



CYCLOPS L.UIM/LAITS, Mn/lcf, Zool. Dau. Trod., No. 2410, 17/6; 



Kutomost. 105, t. 16, f. 4-6. 

 AV/W,,//,-, Brvt. zurNaturg., 7-9, t. 2, f. 4-12. 

 J,<'/,rilf?, Hist. Nat. Crust., iv, 266. 

 Bosc, Mail. Hist. Nut. Crust., ii, 258. 

 AV//Y/, Trans. Berw. Nat. Club, i, 97. 



MONOCVLI'S LAC1M I.VM 8, Manuel, EuC. llli'tll., (. 2l.i !, I'. 15-17. 



i; H ielia, Liuu. Syst. Nat., 29<J7, No. 14. 

 CYCLOPS KVBEXS, .l//'V/,v, Entomost., 104, t. 16, f. 1-3, 1781. 

 Latreille, Hist. Nat. Crust,, iv, 266. 

 Bote, Man. Hist. Nat. Crust., ii, 25S. 

 /.W/v/, Trans. Berw. Nat. Club, i, 97, t. 2, f. 2 (the 

 young). 



MHM.K.I l.t s Kl BENS, /','//, 7, vV'.v, Op. Clt. 



/, Hue. mi'th., t. L'GI, f. 10, 11. 

 lui, Liuii. Syst. Nat., i, 2'.'.i7, No. 13. 

 CASTOK, 11'i-x/riMJ, Partington's Cyclop. Nat, Hist., art. 



Cyclops, 1836. 



CASTOR Baird (////^///Vi, Trans. IVnv. Nat. Club, i, 97, 

 1835; Philosophical Transactions, No. 288j 

 1703, f. G of accompanying plate. 

 Bukt',; Microsc. made Easy, 93, t. 9, f. 2. 



CYCLOPSIXA CASTOK, M. Eilc-ards, Hist. Nat. Crust., iii, i27, 1S40. 

 /;,///'/, Trans. Bcrw. Nat, Club, ii, 154, lMr>. 

 (ii..\r< EA KCBKNS, Koc//, Dcutsch. Crust., h. xxxv, t. 4 (male), t. 5 



(female). 

 GLAUCEA C.ERULEA, Koch, 1. c., xxxv, t. 6. 



Tlic head may be easily distinguished 

 from the body, though it is firmly articulated with the 

 first segment of the thorax. 



The thorax consists of five rings, the first being consi- 

 derably the largest. 



The abdomen is composed of five articulations also, tin- 

 last being divided at extremity into two lobes, each of 

 which gives origin to five plumose seta-. 



The eye is large, of a fine ruby colour ; and we can 

 distinctly see the muscles which move it, and of which 

 there are several. 



The antenna- are large organs, of great length, and 

 strong. They an- formed of aliout twenty-six articulations, 

 each furnished with one or more set;e, the last terminated 



